I've always had the utmost respect for anyone who works in a profession that involves night shift. And juggling the responsibility of your kids too. It's a huge thing you do.

It doesn't seem as if the change over system is very supportive- you've got responsibilities outside of work that you need to attend to.

As hard as it is, you also need to consider your own well being. As hard as it is if you need a day (night) off, do what is in the best interests of you.

I think you're doing an admirable job.